Tractor-wheel



VVA S. STUI'HOFF AD C. A. PSll.\["tDH.

TRACTOR WHEEL.

AFPUCAUUN min EPL s. 1913.

n, 3 5 2, 6 35 Patented Sept. 14, 1920.

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WILLIAM s'.v stro'ilHor inviiAciiARLEs'A.y PS'ILANDERQOF iEsT-N, PEivsvLvaNia,

AssIGNoRs To WILLIAM wnanToN JR. aco., INCORPORATED, or EASTON, PEN-N- syLvAivIa. AzcoaroaATIoN-or PENNSYLVANIA.

' TRACTOBFW'EEL y i Specification yof Letters Patent.

Patented Sept. 14, 1920.

Application filed September 9, 1919. Serial No. 322,702.

To all w/Lom t may concern.'

Be it known that we, WILLIAM S.'

S'roTHoFF and CHARLES A. PSILANDER, citin Zens of the United States, residing yat Eas ton, in the county of Northampton and State of Pennsylvania, have invented certain new and useful Improvements vin Tractor-VVheels, of which the following is a prlse a central upwardlyextending web 13,

specification.

Our invention relates to wheels of the self-laying track type such as, for example, the tractor wheel shown in Letters Patent 1,298,7 81 to Pavesi and Tolotti.

Objects of our invention are to simplify and lessen the expense ofmanufacture of the wheel; to provide a comparatively light, yet rugged construction; toprovide for variable suspension of the pads or track-laying units; to provide novel means for uniting the wheel sections without resorting to spot welding or the like; and to provide comparatively light,vyet eii'ective pads or ground engaging elements.

'Ihe nature, characteristic features and scope of the invention will more readily be understood from .the following description taken in connection withpthe accompanying drawings, forming a party hereof, wherein-f Figure 1 is a perspective viewof a tractor wheel embodying our invention.

Fig. 2 is a sectional view thereof.

Fig. 3 is a detail of one of the spoke elements.

Fig. 4 is a perspective view of one of the pads.

According to our invention, the wheel proper comprises two coincident skeleton disks,veaehV consisting of inner and outer concentric rings 5 and 6 integrallyy connected by radial webs or spoke elements 7 For strengthening purposes and also to improve the general mechanical appearance of the wheel, the spoke elements are fluted or depressed, as at 8. The inner ring or hub carrying element 5 is provided with an appropriate hub 9, so that in general appearance, construction, and relation of parts the wheel is, as indicated in section in Fig. 2. The outer rings or rim elements 6 are equipped with cross-wise ranging bolts 10 constituting journals for the rollers 11. The bolts 10 are accommodated in eyelet bushings 12 in the rims, which prevent chaing of the rims by the bolts and nuts and also constitute thrust provisions for the rollers, As in the patent, hereinbefore referred t0, the pads or track-laying units are relatively iioating with respect to the wheel, being guided by the double rim and supported by devices radiating from the hub.

According to our invention the pads comthe extended bottom 14 of -whichis equipped with a pair of ground engaging cleats 15 and 16, whereof the former is a straight transverse offset 'and whereof the latter is of a eneral vV formation.

he webs 13 are accommodated between the wheel rim elements 6, and their ends 17 have ya radius or curve to enable them to cooperate with the rollers 10 in the manner alluded to in the patent. There are lugs 18 on` the webs 13, with eyes to receive a cross-pin 19. The pins 19 are of sulicient length to overhang the rims 6 so that they will straddle said rims and prevent loss of the pads should the latter become disconnected.

The pins 19 are provided with central annular groovesy 20, and the ad supports or coiled springs 21 radiating rom the hub have ring-like extensions 22 which pass between thelugs and engage said grooves. It may here be remarked that the specific construction of the pins 19 and their relative arrangement forms n0 part of the present invention.l

We provide an additional lug .23 for direct engagement of the coiled springs in order to vary the action of the pads according to thetypeof tractory withwhich the wheels are used. In this event, the pins 19 would still occupy the other lugs.

Having described our invention, We

' 1. A wheel of the type recited comprising stituting thrust provisions for the rollers.

y2. In a wheel of the type recited, rims having cross-wise ranging bolts constituting journals` rollers thereon, and eyelet bushof the pads, and rim-straddling devices carings in the rims to accommodate the bolts ried by the other set to prevent loss of pads. and constituting thrust provisions for the In testimony whereof we ax our slgna- 10 rollers. v Y tures. l'

3. In ay wheel of the type recited, pads v f` f having two sets of lugs, spring supports WILLIAMS. 'STOTHGFR adapted to either set for varying theraction Y CHARLES A. PSILANDER. 

